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 A251952 Number of (n+2) X (2+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3 X 3 subblock summing to 3. 1
 15246, 188296, 2723490, 41025310, 641763520, 10250030572, 165378271354, 2684347690572, 43717562894316, 713287612146476, 11649757719157308, 190377609927883884, 3112084939924022446, 50881861525857182420 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 2 of A251955. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=2 ..1..0..1..1....1..1..0..1....0..2..2..2....0..2..2..0....0..0..0..0 ..2..2..2..1....1..0..0..2....0..2..0..2....0..0..2..2....0..0..2..2 ..1..2..2..0....2..0..0..1....0..2..2..2....0..2..2..0....2..2..0..2 ..1..2..2..0....1..2..1..2....2..0..0..0....2..0..2..2....0..2..0..2 CROSSREFS Cf. A251955. Sequence in context: A259395 A233924 A115924 * A205996 A296087 A252318 Adjacent sequences: A251949 A251950 A251951 * A251953 A251954 A251955 KEYWORD nonn AUTHOR R. H. Hardin, Dec 11 2014 STATUS approved

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Last modified September 18 11:24 EDT 2024. Contains 376000 sequences. (Running on oeis4.)